氧化锌避雷器分布式测量装置的研究

Research on zinc oxide lightning arrester distributed measurement device

为了改进氧化锌避雷器传统测量方法和现有状态监测系统传输方式存在的弊端,提出一种氧化锌避雷器分布式测量装置。将PT二次侧电压、阻性基波电流和阻性三次谐波电流作为判定氧化锌避雷器性能的参考参数,采用AT91RM9200为核心处理器,通过对PT二次侧电压、阻性基波电流和阻性三次谐波电流的提取、采集、分析,利用Wi-Fi进行通信传输,最终在基于LABVIEW软件设计的终端处显示各判定参数的实时采集波形。通过实验验证,本设计不仅保证了对避雷器性能状态进行在线监测的准确性,并通过Wi-Fi进行通信传输提高了分布式测量的可靠性,实现简单,满足实际需求。

In order to improve the traditional measurement method of zinc oxide lightning arrester and the drawbacks of the existing transmission condition monitoring system, this paper proposes a zinc oxide lightning arrester distributed measurement device.In this design, PT secondary side voltage, resistive fundamental harmonic current and resistive third harmonic current are extracted, collected and analyzed, Wi-Fi is used to communicate, and at last, the real-time acquisition waveform of each judgement parameter is displayed on the terminal based on the LABVIEW software design.The experiment results verified that this design can ensure the online monitoring accuracy of the performance of lightning arrester.At the same time, communicating via Wi-Fi transmission, the reliability of the distributed measure-ment is improved.The design can be implemented easily and meet the practical requirments.